12694144 has 16 divisors (see below), whose sum is σ = 25289370. Its totient is φ = 6347008.

The previous prime is 12694111. The next prime is 12694169. The reversal of 12694144 is 44149621.

It can be written as a sum of positive squares in only one way, i.e., 12334144 + 360000 = 3512^2 + 600^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×12694144² = 322282583785472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49459 + ... + 49714.

Almost surely, 2^12694144 is an apocalyptic number.

It is an amenable number.

12694144 is a deficient number, since it is larger than the sum of its proper divisors (12595226).

12694144 is an frugal number, since it uses more digits than its factorization.

12694144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99187 (or 99175 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 12694144 is about 3562.8842248942. The cubic root of 12694144 is about 233.2747898478.

The spelling of 12694144 in words is "twelve million, six hundred ninety-four thousand, one hundred forty-four".